When to Plant Brussels Sprout in Haiku, Hawaii (96708)

Location

Haiku, Hawaii

ZIP Code

96708

USDA Zone

12a

Last Frost

Thursday, January 1, 2026

📅 Planting Calendar

Start Seeds Indoors Thursday, October 9, 2025

Transplant Outdoors Thursday, January 1, 2026

Pro Tip: Start Brussels Sprout seeds indoors 12 weeks before your last frost date, then transplant outdoors around Thursday, January 1, 2026.

🌿 Plant Details

Scientific Name Brassica oleracea var. gemmifera

Days to Maturity 84 days

☀️ Growing Requirements

☀️

Sun

Full Sun

💧

Water

Regular

Seeds typically germinate in 1-7 days

Ready to Plant Brussels Sprout in Haiku?

Get your seeds now so they're ready by Thursday, October 9, 2025.

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Growing Brussels Sprout in Zone 12a

Brussels Sprout (Brassica oleracea var. gemmifera) is a popular garden vegetable. In Haiku, Hawaii, which is in USDA Hardiness Zone 12a, you should start seeds indoors around Thursday, October 9, 2025.

Your average last frost date is Thursday, January 1, 2026. Plan to transplant your Brussels Sprout seedlings outdoors around Thursday, January 1, 2026, about 0 weeks after your last frost date.